Malicious PDF — malware analysis report

Static analysis result for SHA-256 066ae14c824dca78…

MALICIOUS

PDF

41.2 KB Created: 2020-08-18 23:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad82494bac5e388f6812457c1f439faf SHA-1: 5503a74b9e73b1302251e4dbba2902684f531d7a SHA-256: 066ae14c824dca7893bb65f750d16547d70aeb63fad3af8663817b665b2c7dbd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to a redirector service (ttraff.ru) disguised as worksheets, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=alphabetizing+words+worksheets In PDF document text
    • http://files.flyfishingcoyhaique.com/uploads/1/3/1/4/131406288/kixukutajegetiw.pdfIn PDF document text
    • http://files.vinodbharti.com/uploads/1/3/1/4/131438464/nakoxebowirap-jidanusixexa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0986/files/parker_pneumatic_valve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/wawatajarinetiven.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/43908184471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gumuwajufutoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/jadezewikuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8520/7454/files/fevefetipivikoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9580/0475/files/wotafikenisokoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8411/8171/files/guzatapujabol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/hdm_a_composable_framework_for_big_data_processing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/bootstrap_sass_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/suzadejukufadaver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9308/2783/files/80602466514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8879/8111/files/vanelamopaderatatu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000624b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624B 5556 bytes
SHA-256: f8cea786aad61ead694f3b9840e232d2ac0670ab2466d675d9c6ca53864977c1
font_01_sfnt_off0000752e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 10192 bytes
SHA-256: 68e4bfda90a08d3d845d31614fba081bb5e0a32864176458b48058b3baf1938e

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